Well he did hurt his back in 2017 and 2019. I think both those were very winnable even under those conditions without a tweaked back.yep to be fair i dont think he was playing well during the summer, had nothing to do with injury. USO just doesnt suit him anymore.
In 2017 he won the slow IW & Miami, made the final of both in 2019 and even did ok on clay this year. I think his issues in NY have more to do with it's placement on the calendar.